| M.B. Crowe |
Pierre le Chantre, Summa de Sacramentis et Animae Consiliis Troisième partie (III 2a). (Analecta Mediaevalia Namurcensia 16), by Jean-Albert Dugauquier |
|
34/3, p. 237 |
| Anthony Luttrell |
The Spanish Church and the Papacy in the Thirteenth Century. (Cambridge Studies in Medieval Life and Thought: Third Series, volume 4), by Peter Linehan, Peter Lineham |
|
41/3, p. 285 |